Wholesale Grower of Predictable Quality Plants. Greenleaf is one of America's largest wholesale nursery growers, each year producing many millions of container-grown plants for retailers, re-wholesalers and landscapers across the U.S. and Canada. BR>Primary products include: one of the industry widest selections of broadleaf evergreen, flowering and deciduous shrubs; 70-plus varieties of ornamental grasses; a full compliment of shrub roses; a broad conifer selection; annual, perennial, and tropical color; an excellent shade and ornamental tree offering, and a selection of the most popular small fruit and fruit tree varieties.